National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

East Troy Municipal Airport (K57C)

Lat: 42.8°NLon: 88.37°WElev: 860ft.

Overcast

76°F

24°C

Humidity 85%
Wind Speed SE 5 mph
Barometer 30.04 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 15 Aug 5:35 pm CDT
Extended Forecast for

Mukwonago WI

  • This Afternoon

    This Afternoon: Isolated showers and thunderstorms. Partly sunny, with a high near 80. Southeast wind around 5 mph. Chance of precipitation is 20%.

    High: 80 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Isolated showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am, then a chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 70. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.

    Low: 70 °F

    Isolated
    T-storms then
    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms, mainly between noon and 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 83. Northwest wind 5 to 15 mph.

    High: 83 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61. Northwest wind 5 to 10 mph becoming light north after midnight.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 79. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. West wind around 5 mph becoming calm.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Southwest wind 5 to 10 mph.

    High: 81 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. West wind around 5 mph becoming calm after midnight. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 62 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 75.

    High: 75 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Partly sunny, with a high near 80. Southeast wind around 5 mph. Chance of precipitation is 20%.
Tonight
Isolated showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am, then a chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 70. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Sunday
A 20 percent chance of showers and thunderstorms, mainly between noon and 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 83. Northwest wind 5 to 15 mph.
Sunday Night
Partly cloudy, with a low around 61. Northwest wind 5 to 10 mph becoming light north after midnight.
Monday
Sunny, with a high near 79. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 61. West wind around 5 mph becoming calm.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Southwest wind 5 to 10 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. West wind around 5 mph becoming calm after midnight. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 57.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 76.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 59.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mukwonago WI
 42.86°N 88.34°W (Elev. 791 ft)
Last Update:
4:33 pm CDT Aug 15, 2026
Forecast Valid:
5pm CDT Aug 15, 2026-6pm CDT Aug 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation